package com.atguigu.oss.service.impl;

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;
import com.atguigu.oss.service.OssService;
import com.atguigu.oss.utils.ConstantPropertiesUtil;
import org.joda.time.DateTime;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.UUID;

@Service
public class OssServiceImpl implements OssService{

    /*后端传送文件过来，实现文件上传，上传完成后，需要把路径拼接出来传递给前端*/
    @Override
    public String uploadFileAvatar(MultipartFile file) throws IOException {
        // Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
        String endpoint = ConstantPropertiesUtil.END_POINT;
        // 阿里云账号AccessKey拥有所有API的访问权限，风险很高。强烈建议您创建并使用RAM用户进行API访问或日常运维，请登录RAM控制台创建RAM用户。
        String accessKeyId = ConstantPropertiesUtil.ACCESS_KEY_ID;
        String accessKeySecret = ConstantPropertiesUtil.ACCESS_KEY_SECRET;
        // 填写Bucket名称，例如examplebucket。
        String bucketName = ConstantPropertiesUtil.BUCKET_NAME;
        // 填写Object完整路径，完整路径中不能包含Bucket名称，例如exampledir/exampleobject.txt。
        /*将图片存放到指定文件里面*/
        String objectName = file.getOriginalFilename();
        /*生成随机的文件名*/
        String uuid = UUID.randomUUID().toString().replaceAll("-", "");
        String filename=uuid+objectName;
        /*拼接日期*/
        String dateTime = new DateTime().toString("yyyy/MM/dd");
        filename=dateTime+"/"+filename;

        InputStream inputStream = file.getInputStream();

        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            // 创建PutObjectRequest对象。
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, filename, inputStream);
            // 如果需要上传时设置存储类型和访问权限，请参考以下示例代码。
            // ObjectMetadata metadata = new ObjectMetadata();
            // metadata.setHeader(OSSHeaders.OSS_STORAGE_CLASS, StorageClass.Standard.toString());
            // metadata.setObjectAcl(CannedAccessControlList.Private);
            // putObjectRequest.setMetadata(metadata);

            // 设置该属性可以返回response。如果不设置，则返回的response为空。
            putObjectRequest.setProcess("true");

            // 上传文件。
            PutObjectResult result = ossClient.putObject(putObjectRequest);
            // 如果上传成功，则返回200。
            System.out.println(result.getResponse().getStatusCode());
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
//        https://huangedu-1010.oss-cn-chengdu.aliyuncs.com/banner%20%281%29.jpg
        String url="https://"+bucketName+"."+endpoint+"/"+filename;
        return url;
    }
}